Formerly called Jungles, but the PC crowd (liberals) decided Jungles was a bad word. Brings to mind black people running around naked swinging through trees. Rain forest on the other hand makes us think of tall magnificent trees, beautiful flowers and friendly animals.

Lets go for a walk in the rain forest.
This sux, the bugs are eating me up in this rain forest.
Tarzin don't live in the Jungle, you fool, he lives in the the rain forest.
I liked the Jungle better, it rains all the time in this rain forest.
I live in the Urban rain forest right next to the KFC.